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Ironing appliance comprising a piezoelectric pump

Inactive Publication Date: 2013-07-16
ROWENTA WERKE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to overcome the problems in current ironing appliances by proposing one with a piezoelectric pump that can expel air bubbles and perform well even after no-load operation. This will improve the quality of the ironing process.

Problems solved by technology

However, such a piezoelectric pump has the disadvantage of not enabling rapid and easy expulsion of air bubbles introduced in the pumping chamber, for example during no-load operation of the pump in the absence of water in the receptacle.
In particular, with such a configuration of the piezoelectric pump, the air bubbles tend to get stuck in the top portion of the pumping chamber and cannot be expelled.
A piezoelectric pump has the disadvantage of having a movable wall with only a very slight clearance such that pump performance is greatly diminished when bubbles are present in the pumping chamber.

Method used

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  • Ironing appliance comprising a piezoelectric pump
  • Ironing appliance comprising a piezoelectric pump
  • Ironing appliance comprising a piezoelectric pump

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Embodiment Construction

[0028]Only the elements needed for understanding the invention have been shown. To make the drawings easier to read, the same elements have the same reference numbers from figure to figure.

[0029]FIG. 1 shows a clothing iron comprising a pressing sole 1 surmounted by a body equipped with a handle 2, the body enclosing a water receptacle 3 and a piezoelectric pump 100 supplied by the receptacle 3, the operation of which is controlled by means of a trigger (not visible in the figures) provided under the handle 2.

[0030]According to FIG. 2 illustrating the iron in exploded view, the sole 1 of the iron thermically contacts a heating element 10 that integrates, in a manner known per se, a vaporization chamber 11 for generating steam, wherein the vaporization chamber is closed by a lid 12 and connected to a steam dispensing circuit that includes steam outlet holes bored in the sole 1.

[0031]In order to restrict the heat from being conducted to the iron handle 2, the heating element 10 is sur...

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PUM

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Abstract

Provided is an ironing appliance, including a pump that has a pumping chamber provided with an inlet and an outlet, the pumping chamber including a moveable wall having an outer surface contacting a piezoelectric actuator provided to move the movable wall while changing the volume of the pumping chamber by the piezoelectric actuator, wherein the pump is placed in the ironing appliance such that the outlet of the pumping chamber is located at a higher level than the inlet in a normal position for operating the appliance.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an ironing appliance comprising a pump that includes a pumping chamber equipped with an inlet and an outlet, the pumping chamber including a movable wall displaceable under the action of a piezoelectric actuator for displacing the membrane in order to aspirate fluid through the inlet and then discharge it through the outlet.[0003]2. Description of Related Art[0004]Japanese patent application #62142597 discloses a clothing iron comprising a piezoelectric pump that supplies a vaporization chamber with water from a receptacle. In this document, the piezoelectric pump is vertically positioned and includes a pumping chamber comprising an inlet and an outlet positioned vertically one above the other, the outlet being located below the inlet.[0005]However, such a piezoelectric pump has the disadvantage of not enabling rapid and easy expulsion of air bubbles introduced in the pumping chamber, fo...

Claims

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Application Information

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IPC IPC(8): D06F75/18F04B17/00
CPCD06F75/14
Inventor LUKAS, ANDREASCHEVE, BJORNHAHN, MATTHIASMANDICA, FRANCKGELUS, DOMINIQUE
Owner ROWENTA WERKE GMBH